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H. A. DOUGLAS.

CONNECTOR SWITCH.

APPLICATION FILED ocT.24.1911.

Patented Aug. 26, 1919.

UNITED STATES PATENT OFFICE.

HARRY A. DOUGLAS, OF BRONSON, MICHIGAN, ASSIGNOR TO DOUGLAS & RUDD MFG. 00., 0F BRONSON, MICHIGAN, A CORPORATION OF MICHIGAN.

CONNECTOR-SWITCH.

Specification of Letters Patent.

Patented Aug. 26, 1919.

Application filed October 24, 1917. Serial No. 198,388.

To all whom it may concern Be it known that I, HARRY A. DOUGLAS, citizen of the United States, residing at Bronson, in the county of Branch and State of Michigan, have invented a certain new and useful Improvement in Connector- Switches, of which the following is a full, clear, concise, and exact description.

My invention relates to connector switches and has for its general object the provision of a connector shell for holding, at one end, a circuit continuing or translating element and a switch member disposed transversely of the shell for including said element in circuit and excluding it from circuit and which switch member is mechanically coupled with a circuit continuing conductor whereby a conductor carrying plug may be eliminated together with auxiliary contacts which the employment of such plug would necessitate.

I will explain my invention more fully by reference to the accompanying drawing showing preferred embodiments thereof and in which Figure 1 is a longitudinal sectional view illustrating one embodiment of the invention; Fig. 2 is a View on line 2-2 of Fig. 1; Fig. 3 is a longitudinal sectional view illustrating another embodiment of the invention; Fig. 4 is a longitudinal sectional view illustrating another embodiment of the invention; Fig. 5 is a view'on line 5-5 of Fig. 4; Fig. 6 is a view illustratin another modification on line 6-6 of Fig. Fig. 7 is a longitudinal sectional view of the struc ture shown in Fig. 6; and Fig. 8 is a view on line 8-8 of Fig. 6.

Like parts are indicated by similar charactors of reference throughout the different figures.

The embodiment'of the invention illustrated in Figs. 1 and 2 will first be specifically described.

The metallic shell 1 is shown as being provided with an annular bead 2 and tongues 3, the annular mounting sleeve 4 being tightly received between the beads and tongues in order to hold the shell in position. This mounting sleeve 4 is providcd upon a mounting base 5 that is secured to a mounting board 6. A contact carrier or core 7, in the form of a plug of insulating material, is disposed in the shell 1 rearward] y ofthe circuit continuing element 15. This contact carrier has a metallic cylindrical sleeve 8 extending longitudinally thereof. Electrically connected contacts 9 and 10 respectively upon the rear and forward ends of the contact carrier 7 project through the ends of the sleeve 8, these contacts having heads 9 10 to limit the extent to which they may project from the sleeve 8, the ends of the sleeve being contracted to be engageable with said heads. A metallic coiled spring 11 engages the heads 9 10 of the contacts 9, and 10 to exert rearward pressure upon the contact 9 and forward pressure upon the contact 10. These contacts 9 and 10 are electrically connected by means of the sleeve 8, a connection which may be supplemented by the spring 11 if desired. The forward end of the shell 1 is provided with bayonet slots 12 adapted to receive the bayonet pins 13 upon the base 14 of the lamp or other circuit continuing element 15. The lamp 15 is provided with a contact 16 upon the rear end of its base and engagcable by the spring pressed contact 10. The switching member includes the contact carrier 17, of insulating material, that extends laterally of the shell 1 and is accessible for operation at the side of the structure instead of at the end thereof. This contact carrier 17 is coupled with a flexible circuit continuing conductor 18 which is mechanically and electrically coupled with the contact 19. As illustrated, this contact 19 is separate from the flexible conductor 18 and is maintained in assembly therewith by means of an assembly screw 20 extending laterally of the conductor partially through the contact 19 and into engagement with the conductor 18. The contact 19 is adapted to be engaged "by the contact 9, the rear end of the contact 9 being desirably hemispherical while the corresponding seat in the contact 19 is similarly hemispherical. The contact carrier 17 has two alternative positions, one in which the contact 9 is in engagement with the contact 19 and the other in which the contact 9 is in engagement with the seat 21 formed directly in the insulation of the carrier 17.

In each of the other embodiments of the invention illustrated there are elements similar to those that I have thus far described in connection with Figs. 1 and 2, similar parts having similar characters of reference.

In the construction shown in Figs. 1 and 2 the seat 21 and the contact 19 are alined lon-.

gitudinally of the carrier 17 and this carrier extends transversely of the carrier 17 into contact 19 that is disposed transversely of this carrier. In the construction shown in Fig. 3 the contact 19 extends longitudinally of the carrier 17 while the conductor 17 also extends longitudinally of such carrier. In the arrangement of Figs. 1 and 2 one end of the carrier 17 is pressed inwardly when the circuit is to be opened and the opposite end is pressed inwardly when the circuit is to be closed. In the construction of Fig. 3, the carrier 17 is provided with a knob 22 which is pushed inwardly when the circuit is to be opened and is pulled outwardly when the circuit is to be closed. In the construction shown in Figs. #1 and 5 the contact 19 and the seat 21are located in the same zone, the contact 19 and the conductor 18 being assembled with the carrier 17 in a'manner similar to that illustrated in Fig. 3.v The knurled knob 22 in the construction of Figs. 4 and 5 is turned in one direction or the other to bring the contact 9 into engagement with the contact 19 01' the seat 21 accordingly as the circuit is to be closed. or opened. In each of the constructions specifically described the carrier 17 is operated at the side ofthe structure instead of at the end thereof and there is no additional contact carrier for the conductor 18, such additional contact carrier and the additional contacts that would be necessitated by its employment being eliminated because of the mechanical coupling of the conductor 18 with the carrier 17 that is also a switch member.

In the construction shown in' Figs. 1 to 5 inclusive the shell 1 forms a part of the circuit, the portion of the lamp base that engages the shell being metallic and constituting onelterminal of the lamp filament,

contacts 9, 10, 2t and 25 also carries the plug terminal 26 of a circuit conductor which is complemental to the circuit conductor 18, this plug having an annular recess 27 which receives the rearwardly pressed contact 2eL- This carrier 7 also carries the contact carrier 17 that is accessible for operation from the side of the structure but which does'not project through the shell as it does in the construction shown in Figs. 1 to 5 inclusive. In the structure of Figs. 6, 7 and 8 the carrier 17 is movable transversely of the structure and, in common with the other constructions, is accessible for operation laterally of the structure instead of at an end of the structure.

In the construction shown in Figs. 1, 3 and 4 the shell 1 also has an additional annular bead 28 and tongues 29 between which bead and tongues there is received a sleeve 30 which is enlarged and extended forward to form an annular mounting 31 for a cowl 32. The cowl 32 may be turned to define the direction in which the light is to emanate from the lamp.

Having thus described my' invention I claim as new and desire to secure by Letters Patent the following A connector switch including a shell formed at its forward end for engagement with a circuit continuing element; a circuit continuing element coupled with the forward end of the shell and carrying a contact upon its rear end; a contact carrier coupled with the shell rearwardly of said circuit continuing element; a contact upon the forward end of the contact carrier engageable with the contact upon the rear end of said circuit continuing element; a rearwardly spring pressed contact carried by said contact carrier at its rear end and electrically connected with the contact at the forward end of the contact carrier; a switch member carried by the structure and which ,is inclusive of a movable contact carrier; a contact upon the latter contact carrier; and a circuit continuing conductor mechanically and electrically coupled with the latter contact which is engageable with and formed to be held by the aforesaid rearwardly spring pressed contact to close circuit, the latter contact carrier having a formation at one side of the contact carrier thereby that is engageable by said re'arwardly spring pressed contact to maintain the circuit open.

In witness whereof, I hereunto subscribe my name this 8th day of October A. D.,

HARRY A. DOUGLAS. 

